wrf_user_latlon_to_ij读取格点要不要减一[已解决]

chongzika

[img]file:///C:\Documents and Settings\Administrator\Application Data\Tencent\QQ\Temp\[5UQ[BL(6~BS2JV6W}N6[%S.png[/img]http://www2.mmm.ucar.edu/wrf/OnLineTutorial/Graphics/NCL/Examples/SPECIAL/wrf_meteo_5.ncl
Find the ij location for the point if interest  lat = 32.5  lon = -87.  llres = True  llres@ReturnInt = True   ; Return integer values  locij = wrf_user_ll_to_ij(a, lon, lat, llres)  locij = locij - 1        ; array pointers in NCL space  locX = locij(0)  locY = locij(1)[img]file:///C:\Documents and Settings\Administrator\Application Data\Tencent\QQ\Temp\[5UQ[BL(6~BS2JV6W}N6[%S.png[/img]http://www.ncl.ucar.edu/Document/Functions/WRF_arw/wrf_user_ll_to_ij.shtml的例子1也减了
opt = True  loc  = wrf_user_ll_to_ij(a,(/minlon,maxlon/),(/minlat,maxlat/),opt)  loc = loc-1          ; To convert to NCL subscripts如果精度不高的话差别可能还蛮大的吧。但是有些例子好像并没有考虑ncl的下标是从0开始的

chongzika

自己用ncview查看了下应该不用-1